Gas-heater.



G. WALKER.

GAS HEATER APPLICATION FILED APRyZG. 191s.

1,28,99n- Patented m 29, 1918.

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G. WALKER.

GAS HEATER.

APPLICATION FILED APR. 26. 1918.

1 $32,9989 Patented Oct. 29, 1918.

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s'r'r GAS-HEATER.

Specification of Letters Patent.

Patented Cot. 2'9, 1913.

Application filed April 26, 1918. Serial No. 230,971.

To all whom it may concern:

Be it known that I, GEORGE WALKER, a citizen of the United States, residing at San Francisco, in the county of San Francisco and State of California, have invented certain new and useful Improvements in Gas- Heaters, of which the following is a specification.

This invention relates to a stove for heating purposes and while designed mainly for use with illuminating gas is not limited in its use to such fuel, as any form of gas or oil burner might be provided for it- The invention consists especially in the construction of the upper portion of the stove whereby the heated air currents are forced to travel through this portion of the stove before escaping to an outlet pipe, in combination with products of combustion, in such manner that they will give up a maximum amount of their heat units, thus caus- .ing the stove to radiate a great quantity of heat compared with the amount of fuel consumed.

The invention further consists in the novel features of construction hereinafter described, pointed out in the claims and shown in the accompanying drawings, in which:

Figure 1 is a vertical section.

Fig. 2 is a section on the line 2-2 of Fig. 1. i a

Fig. 3 is a section on the line 33 of Fig. 1. I

In the drawings 1 designates a suitable elevated base having a'central opening surrounded by a depending flange 2. Within this flange is placed an air inlet pipe 3. Concentric with said pipe, and below the top of it, is a burner 1. sup lied by a pipe 5.

A stove section6 is mounted on the base and is provided with paneled doors through which the burner flame can be examined and through which the burner can be ignited.

An upper section 8 is secured'by a slip joint 9 to the section 6, these sections constituting the stove body or casing. Y

It is the chambers arranged within and the parts carried by the upper section of the casing that constitute the main feature of my invention. The section 8 is subdivided into upper and lower compartments by a casting 11 riveted or otherwise secured in place. The casting is centrally cut out and on its upper face is formed a U-shaped r1b the bow portion of which encircles one-half of this central opening, said rib being designated at 13, and shown most clearly in Fig. 2.

More or less parallel with the rib 13 is an under rib 14, the rib 14.- lying approximately midway between the rib 13 and upper and lower ribs 15 and 16, the latter ribs being in the form of open rings, the rib 15 joining the outer ends of the rib 13, as shown in Fig. 2.

Fitting in the central opening of the casting and bolted to the rib 13 is a depending tubular air conduit 17, the upper portion of which is partly cut out as at 18 to give lateral communication with the upper portion or compartment of the section 8. This upper portion is divided into two compartments by a sheet metal wall 19 secured to the rib 13 which wall is continued by the upper end portion of the conduit 17. The inclosed portion forms a dead air space while between the casing 8 and the wall 19 is formed a circular air passage the course of which is shown in Fig. 2.

Communication between the passage mentioned and the lower compartment of section 8 is provided for by an opening 20 in the casting 11. To the under rib 14 is secured a sheet metal wall 21 having an opening 22. Concentric with this latter wall is a semi-circular wall 23 secured to the rib 16 so that the lower portion of the section 8 is subdivided into three circular passages communicating with each other, the innermost one opening outwardly and laterally into an escape pipe 29.

In the section 6 is suspended a cylinder 26, open at the top and closed at the bottom by an inverted cone 27.. The conduit 17 dips into this cone and is secured thereto by angled brackets 28, so that the cylinder and cone are supported from rib 13 of the casting 11.

A plate 24 forms the bottom of the section 8. l

A cover or top piece 10 fits over the section 8 being locked in the usual manner to a cover plate 10*. I In operation air is fed to the burner through the pipe 3 and the heated air and products of combustion rise through the conduit 17, thence around the circular passage in the upper compartment of section 8, down through the opening 20 and thence successively through the passages in the lower COH'lPiLllJHlGHl} and out through the pipe 29.

The advantages of this construction are that the heated vapors are forced directly to the top and around the outer wall of the stove while at their greatest temperature, passing to the center of the lower compartment as they give up heat units to the top and outer wall of the stove, and finally to the pipe 29 when they have been robbed of theilargest possible amount of heat units practical in a device of this kind, the direction of the air currents being indicated by arrows.

It will be noted that the cone 27 dips slightly into the air inlet pipe 3, this cone therefore acts as a ballie plate or deflector as it not only throws the hot air over the burner but prevents the upper draft through the conduit 17 drawing any of the fresh cool air into the upper portion of the stove. After passing over the burner the air is forced by the cylinder 26 to travel up along the sides of the section 6 until it passes into the top of the cylinder, thereby heating the side walls of the stove to a greater extent than if it had not been forced against them.

As the air is forced downwardly into the cone it again approaches the burner and regains more orless in temperature making up for the amount lost through the wall of section 6. The air thus practically reheated in the cone rises throughthe conduit and is again brought into direct contact with the outer wall 'ofth'e upper section as previously explained. I

A gasolene burner with drip pan may be substituted for the form of burner shown.

What I claim is:

1. In a device of the kind described, a

stove formed in upper and lower sections 'detaehably connected, the upper section being formed of upper and lower communicating compartments, the lower of which opens to *a suitable exhaust, a burner arranged in the lower stove section, a depending airconduit carried by the upper section and projecting into the lower section, a cyllnder surround- 50 ing the lower portion of the conduit-and haring a conical bottom supported by and spaced from the conduit, and forming a deflector, the conduitoommunicating with the the lower compartment, opening laterally into the upper compartment, vertically arranged wall-s secured to the ribs 1n the upper and lower compartments, respectively, form ing air passages, the casting having a vent opening affording communication between the upper and lower compartments adjacent the outer side wall of the stove, and an exhaust pipe having communication with the innermost passage of the lower compartment,

' as and for the purpose set forth. Y

3. The combination in a stove with a base having a sou-rceof heat and a central air inlet, of an upper section subdivided into upper and lower compartments, the upper compartment having a central dead air chamber encircled by a hot air passage, and the lower compartment hating a series of concentric air passages communicating with each other, the outermost of said passages communicating with the air passage of the upper compartment, and the innermost passage being in communication with 'a suitable exhaust, a depending hot air conduit carried by the upper section and passing through the lower compartment and having communica tion with the air passage of the upper com- 1 partment, and an inverted cone carried by and spaced from the lower end of the said conduit, the hot air traveling downwardly into the cone, thence upwardly through the conduit, around the first mentioned air passage, thence into the lower compartment and successively through the passages of said compartment and-finally fromthe cent a]. portion thereof to the outer air, as and for the purpose set forth.

In testimony whereof I allix my signature.

GEORGE WALKER. Witnesse:

A. K. DnesnT'r, O. L. GRUMP.

copies of thispatent may be obtained for five-cents each, by' address'ing the Commissioner of Patents,

Washington,D.C; i 

